This is true to a degree, when you overwind a pickup the addition inductace that causes will make the pickup loose some high frequency output. I disagree about higheroutput pickups being muddyier though...they have more midrange and bass output yes but that can be advantageous...I guess it depends what you're plugging your guitar into really. oh and lace sensor pickups the resistance isn't comparable with a standard pickup as they're configured completely differently (think they used differant gauge wire too so you defenatly can't compare using resistances).